Image analysis – Applications – 3-d or stereo imaging analysis
Reexamination Certificate
2008-07-01
2008-07-01
Johns, Andrew W. (Department: 2624)
Image analysis
Applications
3-d or stereo imaging analysis
C382S128000, C382S255000, C382S131000, C324S307000, C324S309000, C324S318000, C324S319000
Reexamination Certificate
active
10555576
ABSTRACT:
An iterative method determines a spatial distribution of values of a property of an object, and particularly values of its absorption, in an examination region, on the basis of measured values that values are acquired with a measuring device, and particularly with a computer tomograph. The reliability of each measured value is taken into account when this is done. The measured values can each be represented as a sum of values of the property that have each been multiplied by a proportional factor, the proportional factor being a measure of the proportion that a value of the property forms of the measured value. Each value of the property is approached by one iteration value at a time by setting each iteration value to a starting value and, in an iteration step, generating for each measured value a reference measured value, forming the difference between each reference measured value and the corresponding measured value, and multiplying this difference by a reliability parameter and projecting it backward into the examination region.
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Kähler Thomas
Proksa Roland
Bitar Nancy
Johns Andrew W.
Koninklijke Philips Electronics , N.V.
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